1. Department of Hematology and Central Hematology Laboratory Inselspital Bern University Hospital University of Bern Bern Switzerland
2. Division of Angiology and Haemostasis University Hospitals of Geneva Geneva Switzerland
3. Department of Medical Oncology and Hematology University Hospital Zürich Zürich Switzerland
4. Department of Hematology‐Hemostasis University Hospital of Tours Tours France
5. Institut für Immunologie und Transfusionsmedizin Universitätsmedizin Greifswald Greifswald Germany